Elliot Linzer, Ephraim Feig
Mathematics of Computation
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Elliot Linzer, Ephraim Feig
Mathematics of Computation
Don Coppersmith, Gregory B. Sorkin
Random Structures and Algorithms
Don Coppersmith, Moshe Lewenstein
SIAM Journal on Discrete Mathematics
Don Coppersmith
Journal of Cryptology